More than ever, we rely on a continual supply of power into our homes and offices to, well, quite literally keep the lights on. But what happens when the lights go out? Or what happens when you travel somewhere where there isn’t a convenient power outlet for you to be able to plug into and use?

It’s at times like this that people wish they had backup power. And for years, the mainstay has been gasoline generators. But these are big, bulky, noisy, need regular maintenance, emit noxious fumes that rule out running them indoors, and then there are all the associated risks of setting everything alight with gasoline.

Enter the Bluetti EB240.

Must read: iPhone battery bad after installing iOS 14? Apple offers some help

The EB240 is a beast. It’s a huge heavy box with a sturdy handle on the top, and inside is 2,400Wh of LG lithium cells that can output 1,000W of AC (1,200W surge), 9A of 12V power, and four USB-A ports outputting 2A, and a 45W USB-C port.

The package is no power bank you can slide into a pocket. The box, which resembles a suitcase with a convenient handle on the top — is 37.08 x 16.51 x 36.58 cm and weighs in at an incredible 17.2 kg when all the packaging has been removed.

Despite all the power and ability, there are only three buttons on the EB240 — on/off, AC power on/off, and DC power on/off.

With so much power at my disposal, I wanted to know what I could do with it?

First off, I spent a few days using it to charge up all my smartphones and gadgets. The four 3A USB-A and one 45W USB-C PC port can handle all my devices without batting an eye. I calculated